This is the 69th most frequent Korean word.
높은
"높은" means "high" or "tall" in English.
Here, '높은' describes the mountain to specify that it has a significant height.
높은 산에 오르는 것은 도전적입니다.
Climbing a high mountain is challenging.
In this sentence, '높은' characterizes the position as being elevated.
그는 높은 위치에서 연설하고 있었습니다.
He was giving a speech from a high position.
Here, '높은' qualifies '품질' (quality), emphasizing its superior level.